Here is an example of what happens when I try using the WiFi from my iPhone's hotspot

I cannot get AT+CIPSTART to connect to any web server, and get DNS Fail whenever I try.I have the same issue using a TP-Link TL-WN725N in access point mode. To clarify, I can get the ESP8266 to connect to both of these using AT+CWJAP, the problem lies with the CIPSTART command.

Whereas when I use the WiFi from my home router the connection succeeds.

I need to be able to use the ESP8266 away from home, does anyone have any advice on how to use a hotspot connection?

When I flashed my chip with the attached firmware my ESP8266 returned jumbled characters on boot-up and would not respond to any commands. I reverted to the latest version 1.5.2 and it is functioning the same as before, with the DNS fail on CIPSTART.

Hi,I had to face the same problem not connecting to DNS due to ESP8266 not getting a proper IP address.

Normally all router provides IP address ranges from 192.168.1.xx to 192.168.1.xx.But android mobile hotspot provides ranges from 192.168.43.xx I had ser according to that IP address was 192.168.43.8 and it's working fine.

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Espressif Systems is a fabless semiconductor company providing cutting-edge low power WiFi SoCs and wireless solutions for wireless communications and Internet of Things applications. We are the manufacturer of ESP8266EX.